Safety aperture-closure.



1. E. MUHLFELD & G. w. CLENDON.

SAFETY APERTUBE CLOSURE. YMPLICATIDN FIL'ED SEPT. 7. i915.

Patented Apr. 9, 19:3

2 SHEETS SHEET i m sa J. E. MUHLFELD & G. W. CLENDON.

SAFETY APERTURE CLOSURE.

APPLICATION FILED SEPT. 7. 1915.

1,261,952. I y v Patented Apr. 9,1918.

2 SHEETS-SHEET 2- UNITED STAWENT @FFTQE JOHN E. MUHLFELD, OF SCARSDALE, AND GEORGE 'W. CLENIDON, OF BROOKLYN,

YORK, ASSIGNORS TO ECONOMY DEVICES CORPORATION, OF NEW YORK, N. 'Y., A.

GOBPOBATION OF NEW YORK.

SAFETY AIPERTUiE-CLOSURE.

Specification of Letters Patent.

Patented Apr. a, 1918..

Application filed September 7, 1915. Serial No. 49,184.

1'0 au wlwm it may concern:

Be it known that we, J OHN E. MUHLFELD of Scarsdale, county of New York, and

State of New York; and Gnonon W. GLEN- DON, of the borough of Brooklyn, county of Queens, State of New York, have'invented certain new and useful'flmprovements in Safety Aperture-Closureaof which the folsimilar material, so arran ed with reference to the means for detachably securing the closure as to secure a ti ht joint. Our invention further contem dates the provision of an improved detacha le closure device of the character specified having safety means whereby, in the event of failure of the means for detachably securing the closure, the closure isprevented from blowing'oii of the container. Our invention also comprises the provision of an improved closure device whereby the joint between the closure and the container may be located back of means used to removably connect the container to an adjacent construction, and also the utilization of such'means as a safety devicekpre venting the closure from blowing o the container in the event of failure of the means for securing the closure in place.

The foregoing, together with such other objects as may hereinafter appear or are 1ncident to our invention, we obtain by means a steam engine valve-chest, showing our in. I vention applied thereto; Fig.2 IS a front chest embodying a modification of our in-' of a construction, a preferred embodiment of which we have illustrated in the accompanying drawings wherein:

Figure l is a longitudinal section through end elevation of Fig. 1; Fi 3 is a sectional detail taken on the line II- 111" of Fig. 1; Fig. 4 is a front end elevation of a valve vention; Fig. 5 1s a section taken on the line VV of Fig. 4; and Fig. 6 is a detailed section of another modification of the invention.

Inasmuch as'our invention is particularly advantageous in connection with steam en-' gine valve chests, it has been shown in the drawings and will be described in the specification as applied thereto. our invention may be better understood, a brief description will be made of 'the'valve chest. o

Referring particularly to Figs; 1 and; 2 it will be seen that we have shown a por- "tion. of'a cylinder 1, which is provided with a flat valve face 1 having induction and eduction port ,openings 2-2, intermediate which is an exhaust-port opening 3. The

induction and eduction port openings 2+2 y form the terminals of the induction and eduction ports 2 which lead to opposite In order that communicates with an exhaust i (not,

shown). A segmental or D-shaped valve chamber a, open at the ends, is detachably secured to the valve face by any preferred means, there being interposedbetween the valve face and the valve chamber a plurality of gaskets- 6, which may be of any preferred type but which are shown in the drawings in the form of joint wires. Removably mounted in the valve chamber 4 is an open ended, suitably ported, cylindrical bushing 7 in which the piston distribution valve reciprocates. This piston valve comprises two cylindrical .heads 88 provided with suitable packin rings, and an intermediate spool 8f, the eads and s 00 being rigidly connected by means of t e 11; 8 The stem for operating the valve i itidicated bythe numeral 9.- Inclosing the valve mechanism is a valve chest 10 which is preferably cast integral and which is detachably secured to the cylinder 1 by means of a plurality of studs 11 and nuts 11, a suitable gasket 10 being interposed between the valvev chest and the valve chest seat formed on the cylinder. The valve chest mechanism just described is what is known as'the universal valve chest by means of which it is possibleto substitute for the or- @1 5 dinary slide valve mechanism a piston d s-" j,

tribution valve, without the substitution ct new parts.

Heretofore it as been c the valve chest n int 7 although peep-holes hare been provided therein, the vs vs chest was so constructed that it was necessary to remove it bodily from the cylinder it was desired to replace or adjust any of the valve parts located therein. W's propose to provide opening in the valve chest of a size suifioient to remove the valve parts purposes repair or replacement and to close si s opening by our improve cover or clo nre device. With this in view, the valve is provided at its forward end aperture 12 having a shoulder l closure for this opening preferao prises a cylindrical member 13 having flange 13 and a shoulder or offset portion 13 corresponding to the shoulder 12 in the aperture or opening 125 The i preferably joint wire, is int the shoulders 12 and 13. detachably secured in a plurality of studs 1-:

a1 betvvee he closure is position by means or and nuts in. Formed in the cylindrical portion of the closure are vertical holes preferably in number, such holes being arranged so that a pair of the studs 11., hynieans of which the valvechest 10 is detachahly securedto the cylinder 1, may e passed therethrough. This construction forms a simple, convenient, and inexpensive safety device reventinn the cover or closure from hlovv- A:

- thus be seen that mg ofl or the valve chest in the event that the studs 1% or nuts 1% fail. it Wili studs 11 which pass through the closure perform a double function namely, they have their normal func- 'tion of securing the valve chest 10 to the cylinder 1, and they form a safety retain-- ing means for the closure. N o additional parts are thus required.

Inasmuch as the. closur must have movement relative to the safety hoiding means, in order that a tight joint between the closure and the 'vaive chest may at all. times L be secured, the diameter or? the holes 15 is made larger than that of the studs 11 which pass theretnrougln in order to prevent leakage through the o' ienings 15 and around the studs 11, tnoaperture l2 and. the closure are so formed that the shoulders 12 and 13 are located to the rear of the studs 11* 0 n n 1 u that 18 to say, the oint 15o? the closure is located between the safety holding means and the pressure cavity of the valve chest proper. It Wlll be seen that by this 11nroved construction a steam ti ht oint for p v 1 the closure is secured wells at the same time the surety means i o arr-angel that the nuts 1 9* nay he 2. as drawn up tighten tne oint, as may required. .525 hereinhefore pointed out, 6 device 15 simple, eitl'cctr and requires out a gasket or other cnever necessary. on in F1 the c plug icl in t el venting L It will 1 our invention co; the provis t sea-11s pres the foregoing that other things closure device liquid or other near as provided With retain the closure faiiurc of the attaching shown as 'ccornotl Je, changes nressure seiner having an. open ng, of holts for do ts hahly securli g container an adjacent late for said opening and i s iahly secums; said end pla said end plate hcin'" ZLTltllls' the pres sure container that .15 which attach said pro sure contain ture sere event of i g means in the of. -PGS1EL IL zohination a pressure con.- 'neans for detache container to an :19 711651115; Lot (18- tac a NJ container to all a: cicsnre rn :Eor

.own permits of.

.15 resuily d9)" 1H5 ection, repair or detachably from the said orifice, certain of said fastening means being located outside of the inner face of the said closure member to act as a retaining means therefor, and a packing between the pressure container and said closure member ocated. intermediate the said fastening means and the pressure chamber of the container. e 4 v4. The combination of a pressure container having an orifice,v of means for. detachably securing said pressure container to an adjacent structure, a closure member for said orifice, and means for detachably securing said closure member to the pressure container, a part of said means for 'detachably fastene-v ing the pressure container to the ad acent structure havin cooperative relation with the closure mem er to retain the same inpo sition in the event of the failure of the means for detachably fasteningthe-closure member. to the container.

having an orifice, of means for detachably fastening said pressure container to an'adja cent structure, a closure member for sa 1d Oll- V fice, said fastening means having lost motion connection with said closure member, and

' means for adjusting the position of the closure member with reference to the pressure container. I

6. The combination of a pressure container having an orifice, of a closure member for said orifice, and means for detachably securing said pressure container to an adjacent structure, said means cooperating with. said said closure member tothe pr e c n:

tainer, andmeaus for deteehebly fastening the pressure container to edlts r t r having cooperative relation With-fthe closure member retain the sam P s tion in the event at the fail r of'the means for detachably fastening h closure mher to the pressu santa a 8. The combin n of a pressure container having or as. of a clo member for said orifice, means for detechably securing said closure member to the Pressure container, means-for detach y f t n ng the pressure container to. a adjacent structurelhaving cooperat ve relation t closure member to retain the same in posi- 5. Thecombination of a pressure container tion in the event of the tai of h 'means for detachably fasten ng-t closure member to the pressurec ntainei', a. p c ing for said' closure member located intermediate the pressure container and means for detachabl fastening the pressure container to the adjacent structure.

In testimony whereof we have hereunto. i signed our names.

JOHN E. MUHLFELD.

GEORGE W. CLENDON.

"Witnesses:

.- W. Hemmer Fowxns,

M. M; Moons. 

